Spatial separation of antiferromagnetism and superconductivity in CeCu2Si2

被引:13
作者
Faulhaber, E. [1 ]
Stockert, O.
Schmalzl, K.
Jeevan, H. S.
Deppe, M.
Geibel, C.
Steglich, F.
Loewenhaupt, M.
机构
[1] Tech Univ Dresden, Inst Festkorperphys, D-01062 Dresden, Germany
[2] Max Planck Inst Chem Phys Fester Stoffe, D-01187 Dresden, Germany
[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
关键词
heavy fermion; superconductivity; neutron scattering; in-situ AC-susceptibility;
D O I
10.1016/j.jmmm.2006.10.049
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Depending on the actual stoichiometry, CeCu2Si2 shows either antiferromagnetic order, superconductivity or both phenomena. We investigated a single crystal, where Tc approximate to TN = 0.7K are roughly degenerate. A custom-made in-situ AC-susceptibility setup was utilized for an elastic neutron scattering experiment to directly correlate antiferromagnetic intensity and AC-susceptibility. We found antiferromagnetic satellite peaks together with a diamagnetic signal below TN. The results can be understood by a temperature and magnetic. field dependent spatial separation of antiferromagnetic and superconducting volume fractions. (c) 2006 Published by Elsevier B. V.
引用
收藏
页码:295 / 297
页数:3
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